<template>
  <div class="login-wrap">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">门禁管控平台</h3>
      <div class="form_wrap">
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" type="text" auto-complete="off" placeholder="账号">
            <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" type="password" auto-complete="off" placeholder="密码"
            @keyup.enter.native="handleLogin">
            <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
          </el-input>
        </el-form-item>
        <el-form-item prop="code" v-if="captchaEnabled">
          <el-input v-model="loginForm.code" auto-complete="off" placeholder="验证码" style="flex:1;overflow: hidden"
            @keyup.enter.native="handleLogin">
            <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
          </el-input>
          <div class="login-code">
            <img :src="codeUrl" @click="getCode" class="login-code-img" />
          </div>
        </el-form-item>
        <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
        <el-form-item style="width:100%;">
          <el-button :loading="loading" size="medium" type="primary" style="width:100%;"
            @click.native.prevent="handleLogin">
            <span v-if="!loading">登 录</span>
            <span v-else>登 录 中...</span>
          </el-button>
        </el-form-item>
      </div>
    </el-form>
  </div>
</template>

<script>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from '@/utils/jsencrypt'

export default {
  name: "Login",
  data() {
    return {
      codeUrl: "",
      loginForm: {
        username: "admin",
        password: "",
        rememberMe: false,
        code: "",
        uuid: ""
      },
      loginRules: {
        username: [
          { required: true, trigger: "blur", message: "请输入您的账号" }
        ],
        password: [
          { required: true, trigger: "blur", message: "请输入您的密码" }
        ],
        code: [{ required: true, trigger: "change", message: "请输入验证码" }]
      },
      loading: false,
      // 验证码开关
      captchaEnabled: true,
      // 注册开关
      register: false,
      redirect: undefined
    };
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true
    }
  },
  created() {
    this.getCode();
    this.getCookie();
  },
  methods: {
    getCode() {
      getCodeImg().then(res => {
        this.captchaEnabled = res.captchaEnabled === undefined ? true : res.captchaEnabled;
        if (this.captchaEnabled) {
          this.codeUrl = "data:image/gif;base64," + res.img;
          this.loginForm.uuid = res.uuid;
        }
      });
    },
    getCookie() {
      const username = Cookies.get("username");
      const password = Cookies.get("password");
      const rememberMe = Cookies.get('rememberMe')
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password: password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
      };
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true;
          if (this.loginForm.rememberMe) {
            Cookies.set("username", this.loginForm.username, { expires: 30 });
            Cookies.set("password", encrypt(this.loginForm.password), { expires: 30 });
            Cookies.set('rememberMe', this.loginForm.rememberMe, { expires: 30 });
          } else {
            Cookies.remove("username");
            Cookies.remove("password");
            Cookies.remove('rememberMe');
          }
          this.$store.dispatch("Login", this.loginForm).then(() => {
            this.$router.push({ path: this.redirect || "/" }).catch(() => { });
          }).catch(() => {
            this.loading = false;
            if (this.captchaEnabled) {
              this.getCode();
            }
          });
        }
      });
    }
  }
};
</script>

<style rel="stylesheet/scss" lang="scss">
.login-wrap {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100%;
  background: url("../assets/images/login-background.png") no-repeat;
  background-size: cover;
  position: relative;

  .el-form-item {
    width: 100%;
  }

  .el-button--primary {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 24px !important;
    overflow: hidden;
    height: 44px !important;
    font-size: 16px;
    font-weight: bold;
  }

  .login-tip {
    font-size: 13px;
    text-align: center;
    color: #bfbfbf;
  }

  .login-code {
    margin-left: 10px;
    width: 33%;
    height: 44px;
    float: right;

    img {
      cursor: pointer;
      vertical-align: middle;
    }
  }

  .el-login-footer {
    height: 40px;
    line-height: 40px;
    position: fixed;
    bottom: 0;
    width: 100%;
    text-align: center;
    color: #fff;
    font-family: Arial;
    font-size: 12px;
    letter-spacing: 1px;
  }

  .login-code-img {
    width: 100%;
    height: 44px;
  }

  .el-form-item__content {
    display: flex;
    align-items: center;
    //overflow: hidden;
  }


  .login-form {
    border-radius: 24px;
    background: #ffffff;
    width: 80vw;
    height: 80vh;
    padding: 25px 10%;
    background: #ffffff url("../assets/images/login-form.png") no-repeat;
    background-size: cover;
    //border: 1px solid #1890ff;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    box-shadow: 2px 0px 11px 0px rgba(#1890ff, 0.5);
    position: relative;

    .title {
      position: absolute;
      top: 40px;
      text-align: right;
      color: #1890ff;
      font-size: 32px;
      font-weight: bold;
      margin: 30px 0;
    }

    .form_wrap {
      width: 35%;
    }

    .el-input {
      height: 44px;
      display: flex;
      align-items: center;

      input {
        height: 44px;
        border-radius: 24px !important;
        overflow: hidden;
      }
    }

    .el-input__prefix {
      margin: 0 10px;
    }

    .el-input--prefix .el-input__inner {
      padding-left: 40px;
    }

    .input-icon {
      height: 42px;
      width: 14px;
      margin-left: 2px;
    }
  }
}
</style>
